[INFO] updating cached repository adam-mcdaniel/parkinglot-generator-optimizer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/adam-mcdaniel/parkinglot-generator-optimizer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/adam-mcdaniel/parkinglot-generator-optimizer" "work/ex/beta-1.37-6/sources/1.36.0/gh/adam-mcdaniel/parkinglot-generator-optimizer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/adam-mcdaniel/parkinglot-generator-optimizer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/adam-mcdaniel/parkinglot-generator-optimizer" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/adam-mcdaniel/parkinglot-generator-optimizer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/adam-mcdaniel/parkinglot-generator-optimizer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ac4391480658f0bba08eb343db1a6cf963298e59
[INFO] sha for GitHub repo adam-mcdaniel/parkinglot-generator-optimizer: ac4391480658f0bba08eb343db1a6cf963298e59
[INFO] validating manifest of adam-mcdaniel/parkinglot-generator-optimizer on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of adam-mcdaniel/parkinglot-generator-optimizer on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing adam-mcdaniel/parkinglot-generator-optimizer
[INFO] finished frobbing adam-mcdaniel/parkinglot-generator-optimizer
[INFO] frobbed toml for adam-mcdaniel/parkinglot-generator-optimizer written to work/ex/beta-1.37-6/sources/1.36.0/gh/adam-mcdaniel/parkinglot-generator-optimizer/Cargo.toml
[INFO] started frobbing adam-mcdaniel/parkinglot-generator-optimizer
[INFO] finished frobbing adam-mcdaniel/parkinglot-generator-optimizer
[INFO] frobbed toml for adam-mcdaniel/parkinglot-generator-optimizer written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/adam-mcdaniel/parkinglot-generator-optimizer/Cargo.toml
[INFO] crate adam-mcdaniel/parkinglot-generator-optimizer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing adam-mcdaniel/parkinglot-generator-optimizer against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/adam-mcdaniel/parkinglot-generator-optimizer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] fc76f55dbadedccc6f473c14ec0787918cdde93b987fedab7fe7f0a0cea4c0e5
[INFO] running `"docker" "start" "-a" "fc76f55dbadedccc6f473c14ec0787918cdde93b987fedab7fe7f0a0cea4c0e5"`
[INFO] [stderr]    Compiling pathfinding v1.0.3
[INFO] [stderr]    Compiling parking v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 79 |         let mut lot = t.join().unwrap();
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `"docker" "inspect" "fc76f55dbadedccc6f473c14ec0787918cdde93b987fedab7fe7f0a0cea4c0e5"`
[INFO] running `"docker" "rm" "-f" "fc76f55dbadedccc6f473c14ec0787918cdde93b987fedab7fe7f0a0cea4c0e5"`
[INFO] [stdout] fc76f55dbadedccc6f473c14ec0787918cdde93b987fedab7fe7f0a0cea4c0e5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/adam-mcdaniel/parkinglot-generator-optimizer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] cb4c44a0cd343f1e264140290cfb6adcd34183749debb68d721f618b2e9c41a1
[INFO] running `"docker" "start" "-a" "cb4c44a0cd343f1e264140290cfb6adcd34183749debb68d721f618b2e9c41a1"`
[INFO] [stderr]    Compiling parking v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 79 |         let mut lot = t.join().unwrap();
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "cb4c44a0cd343f1e264140290cfb6adcd34183749debb68d721f618b2e9c41a1"`
[INFO] running `"docker" "rm" "-f" "cb4c44a0cd343f1e264140290cfb6adcd34183749debb68d721f618b2e9c41a1"`
[INFO] [stdout] cb4c44a0cd343f1e264140290cfb6adcd34183749debb68d721f618b2e9c41a1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/adam-mcdaniel/parkinglot-generator-optimizer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] e9e834bfa644fda44d07978ca049a76f9e20c93768eef075d08b8b7abf777f78
[INFO] running `"docker" "start" "-a" "e9e834bfa644fda44d07978ca049a76f9e20c93768eef075d08b8b7abf777f78"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/parking-2d474e7fdb268d68
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e9e834bfa644fda44d07978ca049a76f9e20c93768eef075d08b8b7abf777f78"`
[INFO] running `"docker" "rm" "-f" "e9e834bfa644fda44d07978ca049a76f9e20c93768eef075d08b8b7abf777f78"`
[INFO] [stdout] e9e834bfa644fda44d07978ca049a76f9e20c93768eef075d08b8b7abf777f78